Two common Google PageSpeed Insights complaints — inefficient image encoding and legacy formats — can be fixed in WordPress using ShortPixel Image Optimizer. The guide walks through choosing a compression mode (lossy, glossy, or lossless), enabling WebP and AVIF conversion with appropriate delivery methods (picture tag or .htaccess rewrites), running a bulk optimization job across the entire media library, and verifying results via PageSpeed Insights and Chrome DevTools. Credit usage estimates and fallback behavior for older browsers are also covered.
Table of contents
Setting Up ShortPixel Image OptimizerStep 1: Understand What You’re Actually FixingStep 2: Choose Your Compression ModeStep 3: Enable WebP and AVIF ConversionStep 4: Run the Bulk OptimizerStep 5: Verify the ResultsGo Further with WordPress Image PerformanceSort: